When evaluating the replication of IVA viral RNA in IFN-λ-stimulated A549 cells in the ‘preventive/therapeutic’ regime, it was shown (Supplementary, Table S3) that, already three hours after infection, IFN-λ1 treatment leads to a decrease in the number of copies of viral RNA by about fivefold compared to the control. The gene discussed is IFNL1; the disease is infection.